I'm not sure I really understand what you're getting at here OP. Are you saying that people spend all that money (and put up with those toilets) simply so that they can tick it off the list and tell people they've done it and not because they genuinely want to go?
I think if that's what you think of people then it says more about your own motivations and thought processes.
I too, used to go to lots of festivals (including glasto!) Back in the day but haven't been for years. Thinking of going next year as a big group of us are turning 40 but it would definitely only be because I wanted to go and would enjoy it. Not for any other reason you might want to project on me. If people think we're tragic I couldn't give a shiny shit.
News flash: not everyone thinks they same way. Not everyone enjoys the same things. That's kind of what makes life fun...